woocommerce/plugins/woocommerce-admin/packages/README.md

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# WooCommerce Packages
Currently we have a small set of public-facing packages that can be dowloaded from [npm](https://www.npmjs.com/org/woocommerce) and used in external applications.
- `@woocommerce/components`: A library of components that can be used to create pages in the WooCommerce dashboard and reports pages.
- `@woocommerce/csv-export`: A set of functions to convert data into CSV values, and enable a browser download of the CSV data.
- `@woocommerce/currency`: A collection of utilities to display and work with currency values.
- `@woocommerce/date`: A collection of utilities to display and work with date values.
- `@woocommerce/navigation`: A collection of navigation-related functions for handling query parameter objects, serializing query parameters, updating query parameters, and triggering path changes.
## Working with existing packages
- You can make changes to packages files as normal, and running `npm start` will compile and watch both app files and packages.
- :warning: Make sure any dependencies you add to a package are also added to that package's `package.json`, not just the woocommerce-admin package.json
- :warning: Make sure you're not importing from any woocommerce-admin files outside of the package (you can import from other packages, just use the `import from @woocommerce/package` syntax).
- Add your change to the CHANGELOG for that package under the next version number, creating one if necessary (we use semantic versioning for packages, [see these guidelines](https://github.com/WordPress/gutenberg/blob/master/CONTRIBUTING.md#maintaining-changelogs)).
- Don't change the version in `package.json`.
- Label your PR with the `Packages` label.
- Once merged, you can wait for the next package release roundup, or you can publish a release now (see below, "Publishing packages").
---
## Creating a new package
Most of this is pulled [from the Gutenberg workflow](https://github.com/WordPress/gutenberg/blob/master/CONTRIBUTING.md#creating-new-package).
To create a new package, add a new folder to `/packages`, containing…
1. `package.json` based on the template:
```json
{
"name": "@woocommerce/package-name",
"version": "1.0.0-beta.0",
"description": "Package description.",
"author": "Automattic",
"license": "GPL-2.0-or-later",
"keywords": [
"wordpress",
"woocommerce"
],
"homepage": "https://github.com/woocommerce/woocommerce-admin/tree/master/packages/[_YOUR_PACKAGE_]/README.md",
"repository": {
"type": "git",
"url": "https://github.com/woocommerce/woocommerce-admin.git"
},
"bugs": {
"url": "https://github.com/woocommerce/woocommerce-admin/issues"
},
"main": "build/index.js",
"module": "build-module/index.js",
"react-native": "src/index",
"dependencies": {
"@babel/runtime-corejs2": "7.1.5"
},
"publishConfig": {
"access": "public"
}
}
```
2. `.npmrc` file which disables creating `package-lock.json` file for the package:
```
package-lock=false
```
3. `README.md` file containing at least:
- Package name
- Package description
- Installation details
- Usage example
4. A `src` directory for the source of your module, which will be built by default using the `npm run build:packages` command. Note that you'll want an `index.js` file that exports the package contents, see other packages for examples.
---
## Publishing packages
- Run `npm run publish:check` to see which packages will be published
- Create a PR with a CHANGELOG for each updated package (or try to add to the CHANGELOG with any PR editing `packages/`)
- Run `npm run publish:prod` to publish the package
- _OR_ Run `npm run publish:dev` to publish "next" releases (installed as `npm i @woocommerce/package@next`). Currently packages are published this way, but we should be using prod in the future. Only use `:dev` if you have a reason to.
- Both commands will run `build:packages` before the lerna task, just to catch any last updates.
- Lerna will ask you what version you want to release, for example:
```
Select a new version for @woocommerce/components (currently 1.0.1) (Use arrow keys)
Patch (1.0.2)
Minor (1.1.0)
Major (2.0.0)
Prepatch (1.0.2-alpha.0)
Preminor (1.1.0-alpha.0)
Premajor (2.0.0-alpha.0)
Custom Prerelease
Custom Version
```
It will confirm with you once more before publishing:
```
Changes:
- @woocommerce/components: 1.0.1 => 1.1.0
- @woocommerce/date: 1.0.1 => 1.0.2
- @woocommerce/navigation: 1.0.0 => 1.1.0
? Are you sure you want to publish these packages?
```
If you accept, Lerna will create git tags, publish those to github, then push your packages to npm.
🎉 You have a published package!